<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-03-01 -060 06:10:00.000"
URSICode="SAA0K"
StationName="SaoLuis"
GeoLatitude="-2.6"
GeoLongitude="315.8"
Source="Ionosonde"
SourceType="DPS-4"
ScalerType="auto">
<SystemInfo UMLStationID="903">
<FrequencyStepping StartFrequency="1.0" StopFrequency="18.0">
<LinearStepping Step="0.05" Units="MHz" />
</FrequencyStepping>
<RangeStepping StartRange="80.0" StopRange="1360.0" >
<LinearStepping Step="5.0" Units="km" />
</RangeStepping>
<AutoScaler Name="Artist5" Version="500200" ArtistFlags="2 2 0 0 0 0 0 0 0 22 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 85% PACIFIC flags: Multiple candidates for F2x cusp, One of F2 cusps was derived from the other</Comments>
<ContactPerson>
<Name>Dr. Mangalathayil Ali Abdu</Name>
<Affiliation>INPE, Division of Aeronomy</Affiliation>
<Address>Av dos Astronautas, 1.758 Jd. Granja - CEP: 12227-010 Sao Jose dos Campos - SP Brasil</Address>
<Email>maabdu@dae.inpe.br</Email>
</ContactPerson>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.03.01 (060) 06:10:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.15" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-19.74" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="-1.0" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202606003010610009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="7.050" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="3.135" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="22.103" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="1.950" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="1.950" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="7.900" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="220.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="220.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="90" Val="110.000" Name="hmE" Units="km" QL="/" DL="/" />
<URSI ID="83" Val="20.000" Name="yE" Units="km" QL="/" DL="/" />
<URSI ID="86" Val="0.550" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="6.400" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="330.864" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Custom Name="dlt foF2" Val="0.000" Description="Adjustment to the scaled foF2 during profile inversion" Units="MHz" />
<Modeled Name="foEp" Val="0.354" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="1.950" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="1.950" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="309.705" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="244.766" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="2.688" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="92.145" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="12.356" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="48.981" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="78.350" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="3.900" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="103">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
1.95 2.0 2.05 2.1 2.15 2.2 2.25 2.3 2.35 2.4 2.45 2.5 2.55 2.6 2.65 2.7 2.75 2.8 2.85 2.9 2.95 3.0 3.05 3.1 3.15 3.2 3.25 3.3 3.35 3.4 3.45 3.5 3.55 3.6 3.65 3.7 3.75 3.8 3.85 3.9 3.95 4.0 4.05 4.1 4.15 4.2 4.25 4.3 4.35 4.4 4.45 4.5 4.55 4.6 4.65 4.7 4.75 4.8 4.85 4.9 4.95 5.0 5.05 5.1 5.15 5.2 5.25 5.3 5.35 5.4 5.45 5.5 5.55 5.6 5.65 5.7 5.75 5.8 5.85 5.9 5.95 6.0 6.05 6.1 6.15 6.2 6.25 6.3 6.35 6.4 6.45 6.5 6.55 6.6 6.65 6.7 6.75 6.8 6.85 6.9 6.95 7.0 7.05
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
220.000 225.000 225.000 225.000 230.000 228.333 226.667 225.000 230.000 230.455 230.909 231.364 231.818 232.273 232.727 233.182 233.636 234.091 234.545 235.000 235.000 235.000 240.000 240.000 240.000 245.000 245.000 245.000 245.000 245.000 240.000 245.000 250.000 250.000 245.000 250.000 250.000 252.500 255.000 255.000 255.000 255.000 255.000 256.250 257.500 258.750 260.000 260.000 262.500 265.000 265.000 262.500 260.000 265.000 270.000 270.000 270.000 270.000 275.000 275.000 276.667 278.333 280.000 280.000 280.000 280.000 280.000 280.000 280.000 285.000 285.000 290.000 290.000 295.000 295.000 295.000 295.000 300.000 300.000 305.000 305.000 305.000 307.500 310.000 315.000 320.000 322.500 325.000 327.762 330.864 334.372 338.374 342.979 348.337 354.647 362.190 371.363 382.762 397.306 416.508 443.030 482.044 545.095
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
54 66 0 66 0 0 0 66 69 0 0 0 0 0 0 57 0 0 0 0 75 0 72 0 75 57 0 0 69 0 69 0 57 0 0 69 69 0 54 57 57 60 63 0 54 0 66 72 48 60 57 0 0 69 57 60 63 69 54 60 0 0 54 60 66 51 0 69 0 69 69 69 72 63 48 69 69 69 69 66 69 69 0 60 69 69 0 69 69 63 66 66 66 66 66 60 63 66 66 63 57 54 48
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 0.390625 -0.390625 0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -1.953125 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625 -0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="176">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
93.502 95.0 100.0 105.0 110.0 115.0 120.0 125.0 130.0 135.0 135.667 140.0 145.0 150.0 155.0 160.0 161.333 165.0 170.0 175.0 180.0 185.0 187.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 309.705 310.0 315.0 320.0 325.0 330.0 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.234 0.307 0.343 0.354 0.349 0.335 0.31 0.271 0.21 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.222 0.252 0.282 0.312 0.342 0.354 0.391 0.473 0.597 0.798 1.143 1.699 2.391 3.062 3.654 4.167 4.613 5.002 5.344 5.644 5.908 6.139 6.34 6.513 6.66 6.782 6.881 6.956 7.009 7.04 7.05 7.05 7.042 7.021 6.987 6.942 6.887 6.821 6.747 6.666 6.577 6.482 6.381 6.276 6.166 6.054 5.938 5.82 5.7 5.579 5.457 5.334 5.211 5.088 4.966 4.844 4.724 4.604 4.486 4.369 4.253 4.14 4.028 3.918 3.811 3.705 3.601 3.5 3.4 3.303 3.208 3.115 3.025 2.936 2.85 2.766 2.684 2.605 2.527 2.451 2.378 2.306 2.237 2.169 2.103 2.039 1.977 1.917 1.858 1.802 1.746 1.693 1.641 1.59 1.541 1.494 1.447 1.403 1.359 1.317 1.276 1.237 1.198 1.161 1.125 1.09 1.056 1.023 0.991 0.96 0.93 0.901 0.873 0.846 0.819 0.794 0.769 0.745 0.722 0.699 0.677 0.656 0.636 0.616 0.596 0.578 0.56 0.542 0.525 0.509 0.493 0.477 0.462 0.448 0.434 0.42 0.407 0.394 0.382 0.37 0.358 0.347 0.336 0.326 0.315 0.305 0.296 0.287 0.278 0.269 0.26 0.252 0.244 0.237 0.229 0.222 0.215 0.208 0.202

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="0.354" PeakHeight="110.0" Num="3" Error="0.0">
-18.791 2.435 -0.142
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="0.354" EndFrequency="7.05" PeakHeight="309.705" Num="5" zHalfNm="244.766" Error="2.666">
-152.938 47.004 -18.266 2.074 -0.579
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="77.0" Depth="0.154"/>
<TopsideChapman PeakHeight="309.705" PeakDensity="616656.3" PeakScaleHeight="48.981" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
